Showing 1,221 - 1,240 results of 1,343 for search '"Hebei"', query time: 0.08s Refine Results
  1. 1221

    Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North China by Menghui Li, Liping Wu, Xiangyan Zhang, Xinwu Wang, Wenyu Bai, Jing Ming, Chunmei Geng, Wen Yang

    Published 2020-05-01
    “…The NO3/SO42- and OC/EC ratios indicated that coal combustion and motor vehicle emission were the primary sources of pollution, and back-trajectory analysis revealed that the air masses over Zibo on haze days mainly originated in adjacent areas in Shandong Province and the Beijing-Tianjin-Hebei region (BTH). The haze episode was caused by a combination of unfavorable meteorological conditions, secondary formation, the accumulation of local pollutants, and peripheral transmission.…”
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  2. 1222

    Characteristics and Sources of Organic Aerosol Markers in PM2.5 by Zheng Li, Ruiwen Zhou, Yuanyuan Li, Min Chen, Yachen Wang, Tonglin Huang, Yanan Yi, Zhanfang Hou, Jingjing Meng, Li Yan

    Published 2021-08-01
    “…Potential source contribution function (PSCF) and concentration-weight trajectory (CWT) results indicating that Shandong Province and Beijing-Tianjing-Hebei (BTH) region made important contribution to the levels of PM2.5 in Jinan during the winter. …”
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    Diagnostic value of interferon-γ release assay in patients with COPD complicated with pulmonary tuberculosis by Yanxiao Rong, Haibin Wang, Yuanyuan Su, Qian Wang, Xuepei Sun, Wei Wang

    Published 2025-01-01
    “…Methods A nested case-control study was conducted on 123 COPD patients hospitalized at the Fifth Hospital of Shijiazhuang, Hebei Province, from January 2019 to June 2021. Thirty-one patients with active pulmonary tuberculosis complicated with COPD composed the observation group (Group A), 31 patients with nonactive pulmonary tuberculosis complicated with COPD composed the COPD control group (Group B), and 31 patients with active pulmonary tuberculosis not complicated with COPD composed the non-COPD control group (Group C). …”
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    Predictive Value of Netrin-1 Expression and Ultrasonic Blood Flow in Cervical Intraepithelial Neoplasia Severity by Liu B, Wei L, Wu L, Wang H, Wang H, Yu Q

    Published 2025-01-01
    “…Bo Liu, Ling Wei, Lirui Wu, Huiying Wang, Hongli Wang, Qian Yu Department of Gynecology, Hebei Petro China Center Hospital, Langfang, People’s Republic of ChinaCorrespondence: Ling Wei, Email 74037604@qq.comObjective: To analyze the relationship and predictive value of Netrin-1 expression and ultrasonic blood flow parameters with the severity of cervical intraepithelial neoplasia (CIN).Methods: A retrospective analysis was performed on 115 patients diagnosed with CIN and 37 patients with chronic cervicitis, all of whom underwent surgical intervention. …”
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